第一废热锅炉长周期运行瓶颈分析及技术改造  

BOTTLENECKS HINDERED THE LONG TERM OPERATION OF WASTE HEAT BOILER AND ITS TECHNICAL REFORMATION

作　　者：徐鑫金 Xu Xinjin(Wanhua Chemical Group Co.,Ltd.,Yantai 264002)

机构地区：[1]万华化学集团股份有限公司,山东烟台264002

出　　处：《大氮肥》2024年第2期100-103,117,共5页Large Scale Nitrogenous Fertilizer Industry

摘　　要：分析了合成氨装置第一废热锅炉长周期运行中容易出现外套管爆管、腐蚀泄漏、管板焊缝泄漏等故障的原因。通过折流板材质升级、外套管与管板连接方式改为强度焊加强度胀、内管与管头连接方式改为强度焊加强度胀、改变定距钉安装方式,以及制造质量控制、加强水质管理、优化工艺操作等一系列措施,基本消除了第一废热锅炉的运行瓶颈,实现了装置4年以上长周期运行。Failures occurred during the long term operation of the first waste heat boiler in synthetic ammonia plant were analyzed,such as external tube rupture,corrosion leakage,and weld seam leakage on tube plate.Some treatment measures were taken to eliminate these bottlenecks,e.g.updating the material of baffle plate,changing the connection mode of external tube and tube plate to reinforced welding and reinforced expanding,changing the connection mode of internal tube and tube joint to reinforced welding and reinforced expanding,changing the installation of spacing nail,manufacture quality control,water quality control and process optimization.All these measures achieved the four-year long term operation of the plant.

关 键 词：废热锅炉 爆管 泄漏 超温 检修管理 水质管理 工艺控制 

分 类 号：TQ113.25[化学工程—无机化工]